Java hunting and shooting game code based on Swing

The example in this article describes the hunting and shooting game code implemented in Java based on Swing. Share it with everyone for your reference.

The specific implementation code is as follows:

package Game;
import java.awt.Graphics;
import java.awt.Image;
import javax.swing.JPanel;
public class BackgroundPanel extends JPanel {
        private static final long serialVersionUID = 1L;
        private Image image;// 背景图片
        public BackgroundPanel() {
                setOpaque(false);
                setLayout(null);
        }
        public void setImage(Image image) {
                this.image = image;
        }
        /**
         * 画出背景
         */
        protected void paintComponent(Graphics g) {
                if (image != null) {
                        // 图片宽度
                        int width = getWidth();
                        // 图片高度
                        int height = getHeight();
                        // 画出图片
                        g.drawImage(image, 0, 0, width, height, this);
                }
                super.paintComponent(g);
        }
}

package Game;
import java.awt.Container;
import java.awt.event.*;
import javax.swing.*;
public class BirdLabel extends JLabel implements Runnable {
        private static final long serialVersionUID = 1L;
        // 随机生成线程的休眠时间，即控制小鸟移动速度
        private int sleepTime = (int) (Math.random() * 300) + 5;
        private int y = 100;
        private Thread thread;// 将线程作为成员变量
        private Container parent;
        private int score = 15;// 该类角色对应的分数
        /**
         * 构造方法
         */
        public BirdLabel() {
                super();
                // 创建小鸟图标对象
                ImageIcon icon = new ImageIcon(getClass().getResource("bird.gif"));
                setIcon(icon);// 设置控件图标
                addMouseListener(new MouseAction());// 添加鼠标事件监听器
                // 添加控件事件监听器
                addComponentListener(new ComponentAction());
                thread = new Thread(this);// 创建线程对象
        }

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